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OpenAdvisories
Medium · 6.5 CVE-2026-45345 EUVD-2026-30650GHSA-gm54-m39w-grjpPYSEC-2026-2727

Open WebUI: Missing authorization check at the model update function - models from other users can be updated

Published May 15, 2026 · Updated May 18, 2026 · Assigned by GitHub_M

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.5.7, a user can modify another user's model even if its visibility is set to Private. By changing the access permissions during editing, unauthorized access can be gained. This vulnerability is fixed in 0.5.7.

Affected products

VendorProductAffectedFixed
open-webui open-webui < 0.5.7 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI open-webui < 0.5.7 0.5.7 GHSA-gm54-m39w-grjp

References